Why we need Sound Level Meter?

Why we need Sound Level Meter?

A sound level meter is a device used to measure the intensity of sound waves. Use of this device is extremely important because it ensures that all sound exposures are below the threshold of what is considered safe for human ears. For this reason, it is vital to ensure that all sound level meters used on jobs sites have been properly calibrated to assure sound wave measurements are accurate.

What is different between Class 1 and Class 2?

At the reference frequency of 1kHz, the tolerance limits for Class 1 are +/- 1.1dB and for Class 2 the tolerance is +/- 1.4dB.

At the lower and upper extremities of the frequency range, the tolerances are wider. At 20Hz, the tolerances are +/-2.5dB for Class 1 and +/- 3.5dB for Class 2.

At 16Hz, the tolerances are +2.5dB, -4.5 dB for Class 1 and +5.5 dB and -∞ dB for Class 2.

At higher frequencies, the same applies. The tolerances for a Class 1 instrument are tighter at frequencies above 8kHz with the tolerances at 10kHz being +2.6dB, -3.6dB for Class 1 and  +5,6dB, -∞ for Class 2.

At a higher frequency of 16kHz, the tolerances are +3.5dB, -17dB for Class 1 and +6.0dB, -∞ dB for Class 2.

A Class 1 instrument must have a better response and must meet the tighter tolerances.

Where does Scarlet Class 1 Sound Level Meter Apply?

Construction site
Orchestras
Road Construction
Airport
Police Force
Anywhere care about noise dose

Updated on: 13/01/2021